High-end fitness feature
Underwater Treadmill / Swim Jet is a niche but valuable fitness & activity amenity for pool rental hosts. High-end fitness feature. With a startup investment of $3,000–$10,000 and monthly revenue potential of $150–$400, this premium upgrade pays for itself in approximately 23.6 months. While niche, this amenity serves a specific guest segment willing to pay premium rates for the experience.
At a median startup cost of $6,500, underwater treadmill / swim jet falls in the premium tier of pool amenity investments. With per-hour pricing, longer bookings generate proportionally more revenue from this upgrade.
With median monthly revenue of $275, underwater treadmill / swim jet achieves full payback in 23.6 months — a longer-term investment that builds lasting value. Annual revenue potential ranges from $1,800 to $4,800, depending on your booking volume, market type, and pricing strategy.
Fitness amenities are climate-resilient because physical activity generates its own heat management needs. Hot climates: water-based fitness (aqua fitness, paddleboard, swim jets) pairs perfectly with the pool. Temperate climates: land-based activities (basketball, pickleball, mini golf) work best in spring and fall when it's active-friendly. Year-round sports courts are most valuable in mild climates where outdoor activity happens 10+ months. All climates benefit from shaded activity areas for high-exertion activities. If you have waterfront property, paddleboards and kayaks are gold regardless of climate.
Pros: Low competition means you can own this niche in your local market; Significant property value increase that benefits both rental and resale; Per-hour pricing rewards longer bookings and maximizes revenue; Enhances listing photos and differentiates from competing pools; High-end fitness feature — directly improves guest satisfaction.
Cons: Higher upfront investment of $3,000–$10,000 requires financial planning; Professional installation may be required, adding to total cost; Longer 23.6-month payback period — requires patience and consistent bookings; Niche appeal means fewer guests will specifically seek this amenity; Requires clear communication with guests about add-on pricing; Requires regular maintenance and inspection between bookings; May need liability insurance adjustment depending on your provider.